Elimination of Incretin Hormones in Patients With Severe Kidney Failure
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|ClinicalTrials.gov Identifier: NCT01391884|
Recruitment Status : Completed
First Posted : July 12, 2011
Last Update Posted : September 19, 2012
The prevalence of type 2 diabetes (T2D) is increasing rapidly worldwide. T2D is characterized by a severely impaired incretin effect. The incretin effect refers to the insulinotropic action of the nutrient-released incretin hormones glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic peptide (GIP). The incretin effect is defined as the difference in insulin secretory responses between oral and isoglycaemic intravenous glucose challenges (OGTT and IIGI, respectively) and in healthy individuals it accounts for as much as 70% of the insulin response following oral glucose, whereas patients with T2D exhibit an incretin effect in the range of 0 to 30%. Patients with T2D and non-diabetic patients with severe kidney failure share several pathophysiological characteristics, including decreased insulin sensitivity, fasting hyperinsulinaemia and impaired beta-cell function. The reason for these findings remains to be fully elucidated. An ongoing study in our research group is investigating the incretin effect and the incretin hormone secretory responses following OGTT, IIGI and meal ingestion, respectively. In continuation of this study, essential knowledge of metabolism of incretin hormones in an uremic milieu will be obtained in the present study prior to evaluation of the use of incretin-based agents in patients with impaired kidney function. In this second study we evaluate the elimination and biodegradation of GLP-1 and GIP. The biological active incretin hormones are rapidly degraded by the ubiquitous enzyme dipeptidyl peptidase-4 (DPP-4), generating inactive metabolites. The active hormones are however also eliminated by renal clearance, although the importance of this remains questionable. It is likely that the degradation and elimination of the active hormones will be significantly affected in patients with severe kidney impairment.
We hypothesize that elimination and biodegradation of the two incretin hormones, both in it´s active and inactive forms, will be affected in non-diabetic patients with severe kidney failure.
|Condition or disease|
|Study Type :||Observational|
|Actual Enrollment :||24 participants|
|Official Title:||Elimination and Biodegradation of the Incretin Hormones GLP-1 and GIP in Patients With End-stage Renal Disease|
|Study Start Date :||June 2011|
|Actual Primary Completion Date :||June 2012|
|Actual Study Completion Date :||June 2012|
- Intact GLP-1 concentration [ Time Frame: -60 min - 180 min ]During GLP-1 infusion 0-60 min
- Total GLP-1 concentration [ Time Frame: -60 min - 180 min ]GLP-1 infusion 0-60 min
- Intact GIP concentration [ Time Frame: - 60 min - 180 min ]GIP infusion 0-60 min
- Total GIP infusion [ Time Frame: -60 min - 180 min ]GIP infusion 0-60 min
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Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01391884
|Department of Nephrology P, Copenhagen University Hospital, Rigshospitalet|
|Copenhagen, Denmark, 2100|